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19102429643 = 112447709679
BaseRepresentation
bin10001110010100101…
…111111000111001011
31211022021120222012012
4101302211333013023
5303110210222033
612435303210135
71244242654463
oct216245770713
954267528165
1019102429643
118112907140
12385144694b
131a5575210b
14cd2ddcba3
1576c06e248
hex47297f1cb

19102429643 has 8 divisors (see below), whose sum is σ = 20847559680. Its totient is φ = 17358723880.

The previous prime is 19102429609. The next prime is 19102429651. The reversal of 19102429643 is 34692420191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19102429643 - 26 = 19102429579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19102429643.

It is not an unprimeable number, because it can be changed into a prime (19102429603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327923 + ... + 381756.

It is an arithmetic number, because the mean of its divisors is an integer number (2605944960).

Almost surely, 219102429643 is an apocalyptic number.

19102429643 is a deficient number, since it is larger than the sum of its proper divisors (1745130037).

19102429643 is a wasteful number, since it uses less digits than its factorization.

19102429643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712137.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 19102429643 in words is "nineteen billion, one hundred two million, four hundred twenty-nine thousand, six hundred forty-three".

Divisors: 1 11 2447 26917 709679 7806469 1736584513 19102429643